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Finding the Fourth Proportional to 362,624.90, 543,189.92 and 212,409.79

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Solution

The fourth proportional to 362,624.90, 543,189.92 and 212,409.79 is: 318,176.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,624.90 : 543,189.92 = 212,409.79 : x
  2. Step 2: Convert to fraction form
    362,624.90/543,189.92 = 212,409.79/x
  3. Step 3: Cross multiply
    362,624.90x = 543,189.92 × 212,409.79
  4. Step 4: Simplify right side
    362,624.90x = 115,378,856,010.37
  5. Step 5: Solve for x
    x = 115,378,856,010.37/362,624.90
  6. Step 6: Final answer
    x = 318,176.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.